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PLC and HMI Development with Siemens TIA Portal
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By creating control data, programmers create a specific set of criteria or variables that all standard controls should follow. This is a dataset that should follow a requirement or process, such as the following:
Healthy
status Running
statusNot available
statusInhibit
statusThe preceding status types can be added to a Struct data type called Control_Data
, as illustrated in the following screenshot:
Figure 6.14 – Example of a Control_Data output
Figure 6.14 demonstrates a function with an output for the Control_Data
elements. The output is a struct containing elements that go on to be used in a program for control and interlocks with other equipment.
The contents of this Control_Data
struct are shown here:
Figure 6.15 – Control data output
The Control_Data_Example
asset control function block is...
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